fix(core): continue backup workflow even after I/O errors & timeouts

[romanz]

Requires #6741.

No more button requests / errors will be sent later during the backup workflow after an I/O-related error/timeout.

Host will be ignored until the backup workflow is over - sending the final "Success" response may get fail/stuck.

TODOs:

• improve error test coverage

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[github-actions]

en main(all)

model	device_test	click_test	persistence_test
T2T1	test(all) main(all)	test(all) main(all)	test(all) main(all)
T3B1	test(all) main(all)	test(all) main(all)	test(all) main(all)
T3T1	test(all) main(all)	test(all) main(all)	test(all) main(all)
T3W1	test(all) main(all)	test(all) main(all)	test(all) main(all)

Translations

cs main(all)

model	device_test	click_test
T2T1	test(all) main(all)	test(all) main(all)
T3B1	test(all) main(all)	test(all) main(all)
T3T1	test(all) main(all)	test(all) main(all)
T3W1	test(all) main(all)	test(all) main(all)

de main(all)

model	device_test	click_test
T2T1	test(all) main(all)	test(all) main(all)
T3B1	test(all) main(all)	test(all) main(all)
T3T1	test(all) main(all)	test(all) main(all)
T3W1	test(all) main(all)	test(all) main(all)

es main(all)

model	device_test	click_test
T2T1	test(all) main(all)	test(all) main(all)
T3B1	test(all) main(all)	test(all) main(all)
T3T1	test(all) main(all)	test(all) main(all)
T3W1	test(all) main(all)	test(all) main(all)

fr main(all)

model	device_test	click_test
T2T1	test(all) main(all)	test(all) main(all)
T3B1	test(all) main(all)	test(all) main(all)
T3T1	test(all) main(all)	test(all) main(all)
T3W1	test(all) main(all)	test(all) main(all)

pt main(all)

model	device_test	click_test
T2T1	test(all) main(all)	test(all) main(all)
T3B1	test(all) main(all)	test(all) main(all)
T3T1	test(all) main(all)	test(all) main(all)
T3W1	test(all) main(all)	test(all) main(all)

Latest CI run: 25062028854